日志输出 jquery扩展

 1 function log(msg){
 2     if (window["console"]){
 3         console.log(msg);
 4     }
 5 }
 6 log("123456789!");
 7 
 8 (function($){
 9     alert(window.navigator.userAgent.toLowerCase() + ‘\t\n‘ +$.browser.version);
10     //alert($.browser.version);
11 })(jQuery);
12 
13 
14 
15 (function($){
16     $.bbox={
17         win:function(o){
18             o=$.extend({
19             name:‘skyer‘,
20             age:20,
21             sex:‘man‘
22             },o||{});
23             alert(o.name);
24             alert(o.age);
25         }
26     }
27 })(jQuery);
28 
29 $.bbox.win({age:28});
30 
31 
32     $.fn.hoverClass = function (className) {
33         var _self = this;
34         _self.each(function (i) {
35             _self.eq(i).mouseenter(function () {
36                 $(this).addClass(className);
37             });
38             _self.eq(i).mouseleave(function () {
39                 $(this).removeClass(className);
40             });
41         });
42     return _self; 
43     };
44 
45     $.fn.msg=function(txt){
46         alert((txt || ""));
47         return this
48     }
49     $("h1").msg("hello").css(‘color‘,‘#a00‘);